✅【Premium Material】The bicycle crank arm is made of plastic. The outside is plastic, the inside is iron, which is lightweight, high strength and resistant to deformation. And these bike crank arms are durable.
✅【Standard Precision】This bike crank arm provides ultimate chain retention, prolong life, reduce friction and noise. There is no overlap between the 170mm crank arm and chainring bolt.
✅【Exquisite Workmanship】The bicycle crank arm features excellent manufacturing process with fine polishing and excellent color, 170mm crank arm length with no overlap of crank arm and chainring bolt.
✅【Easy Installation】The bike's left crank arm features a standard precision bore, easy to install and ensure a perfect fit for your bike.
✅【Excellent Compatibility】This crank arm is an ideal replacement for your bike repair. It is suitable for many types of bicycles, such as mountain bikes and mountain bikes.